Dela Fuente, Ruben A. Plane trigonometry made easy / Ruben A. Dela Fuente, Ronaldo D. Santos and Bernadette F. Sampinto - Manila, Philippines Merriam & Webster Bookstore, Inc. c2000. - 329 p. - Engineering mathematics made easy series ; vol. 2 . ISBN: 971-30-1104-X Subjects--Topical Terms: Plane trigonometry -- Problems, exercises, examinations. Dewey Class. No.: Res 515.16 D372 2000